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A New Perspective on the Determination and Removal of Pollutants in the Environment, 2nd Edition

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Green Chemistry".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 390

Special Issue Editor


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Guest Editor
Institute of Chemistry, Faculty of Biology and Chemistry, University of Bialystok, Bialystok, Poland
Interests: determination of emerging contaminants in wastewater; leachate and other objects of the water environment; phytoremediation; advanced oxidation; microextraction techniques; gas chromatography; mass spectrometry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The development of civilization and lifestyle changes has increased the production and consumption of various chemical compounds. All chemical substances, as well as their decomposition products and by-products, from various processes may be released into the environment, including natural waters. Most environmental pollutants have limited environmental persistence, but their continuous introduction causes their permanent presence in natural waters. Low concentrations make pollutants unlikely to cause acute toxicity, but many studies have proven that chronic exposure can cause damage to biological components of ecosystems.

This Special Issue aims to present the latest achievements in relation to research on the presence of pollutants in the environment, their harmful effects on organisms, and the development of technologies that limit their introduction into the environment.

Dr. Urszula Kotowska
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • organic pollutants
  • toxic metals
  • wastewater
  • natural environment
  • determination methods
  • phytoremediation
  • adsorption
  • microplastic
  • toxicity
  • environmental risk

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Published Papers (1 paper)

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Research

20 pages, 1383 KiB  
Article
Applying Compost Biochar for Gas Adsorption—Effects of Pyrolysis Conditions
by Sylwia Stegenta-Dąbrowska, Marta Galik, Magdalena Bednik-Dudek, Ewa Syguła and Katarzyna Ewa Kosiorowska
Molecules 2025, 30(16), 3365; https://doi.org/10.3390/molecules30163365 - 13 Aug 2025
Viewed by 180
Abstract
Not all produced compost meets established quality standards, often resulting in environmental challenges. This study investigated the potential of using mature compost as a feedstock for biochar production, with a focus on evaluating the gas adsorption properties of the resulting biochars. Mature compost [...] Read more.
Not all produced compost meets established quality standards, often resulting in environmental challenges. This study investigated the potential of using mature compost as a feedstock for biochar production, with a focus on evaluating the gas adsorption properties of the resulting biochars. Mature compost was utilized as a substrate, and the pyrolysis process involved heating samples within a temperature range of 400–650 °C, at 50 °C intervals, with heating rates of 10 °C·min−1, 15 °C·min−1, or 20 °C·min−1 for a duration of 60 min. The resulting biochars were tested for their adsorption performance against a synthetic gas mixture simulating composting emissions (CO2, CO, H2S, NH3, CH4 in N2). Our findings reveal a significant correlation between the pyrolysis temperature and the sorption characteristics of compost biochars. Specifically, biochars produced at temperatures of 550 °C, 600 °C, and 650 °C (with a heating rate of 10 °C·min−1) demonstrated the highest efficacy in reducing emissions of CO2, CH4, and H2S, achieving reductions of 69%, 69%, and 72%, respectively. However, these biochars exhibited lower adsorption capacity for CO and NH3. Interestingly, biochars produced at 400 °C and 450 °C showed enhanced performance for CO adsorption. Compost biochar shows strong potential for gas adsorption, particularly for CO, CO2, and H2S. Due to its pronounced CH4 sorption capacity, such biochar is better suited for mitigating emissions during composting rather than for biogas purification. Full article
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